the laser is really a technological advance also in the field of mechanical repair welding and reloading of various metals by restricting the temperature of the parts to be repaired, no deformations and cleanliness of the execution is as clean as a sweater knitted by my grandmother,he refilled my engine crankcase with metal so the bearings turned with the crankshaft and deformed the bearing and bearing seats, the aluminum that he put back on the engine crankcase is harder than the crankcase itself he told me that it was very strong in silicon and that they happened to repair engine pistons the company works mainly for aviation.